package com.atguigu.classes.preconditions;

/**
 * @program: myIDEA
 * @description: 二维数组
 * @author: Mr.zjx
 * create: 2021-07-06-16-48
 **/
public class Test20 {
    public static void main(String[] args) {
        int[][] arr = { {1,2},{3,4,5},{6,7,8,9} };
        //打印4
        System.out.println(arr[1][1]);
        //打印9
        System.out.println(arr[2][3]);
    }
}
